South American Sites
Mostrando 13-24 de 36 artigos, teses e dissertações.
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13. Molecular paleoparasitological diagnosis of Ascaris sp. from coprolites: new scenery of ascariasis in pre-Colombian South America times
Paleoparasitological studies using microscopy showed that Ascarisand Trichuris trichiura are the human intestinal parasites most found in archaeological sites. However, in pre-Columbian South American archaeological sites, Ascaris is rare. In this work we standardized a molecular methodology for Ascaris diagnosis directly from ancient DNA retrieved from copr
Memórias do Instituto Oswaldo Cruz. Publicado em: 31/01/2008
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14. Inhibitor design for glyceraldehyde-3-phosphate dehydrogenase enzyme from Trypanosoma cruzi: structural biology and medicinal chemistry / Planejamento de inibidores da enzima gliceraldeído-3-fosfato desidrogenase de Trypanosoma cruzi: biologia estrutural e química medicinal
Parasitic diseases are the foremost threat to human health and welfare around the world. Chagasdisease (also called American trypanosomiasis) is a tropical parasitic disease which occurs in Latin America, particularly in South America. The currently available drugs for this parasitic disease have severe limitations, including poor efficacy and high toxicity.
Publicado em: 2008
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15. DiagnÃstico do setor de rochas ornamentais e de revestimento do Estado de Pernambuco
In this work the geologic considerations on the granites diggings for ornamental ends are presented, a profile of the Brazilian sector of ornamental rocks and a diagnosis of the productive chain of the State of Pernambuco, involving the mining (main deposits, methods of cultivate, technology of cut for the dismounting of blocks), sawing shops and marble shop
Publicado em: 2008
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16. Caçadores-coletores na Serra de Paranapiacaba durante a transição do Holoceno Médio para o Tardio (5920-1000 anos AP) / Hunter-gatherers from Parnapiacaba Mountains during the Middle Holocene to the Later Holocene transition (5920-1000 yr BP)
This thesis provides the results of an archaeological survey focused in hunter-gatherer settlements from Upper Almas valley, on the western side of Paranapiacaba Mountains. Dates from lithics analysis associated to these sites are compared with results from Middle Ribeira valley, developed by De Blasis (1988). In addition, this Thesis treats to establish fra
Publicado em: 2007
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17. Interactions etween ants, fruits and seeds in the cerrado : the role of ants in the biology of seeds and seedlings / Interações entre formigas, frutos e sementes em solo de cerrado : o papel de formigas na biologia de sementes e plantulas
Our knowledge about seed dispersal systems has been improved considerably in the last few years. An increasing number of studies has shown that the process of plant regeneration is often much more complex than we realize, including several different agents across subsequent steps of seed dispersal. For instance, ants may reshape the seed shadow after seeds f
Publicado em: 2007
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18. O QuaternÃrio do Parque Nacional Serra da Capivara, PiauÃ, Brasil: morfoestratigrafia, sedimentologia, geocronologia e paleoambientes
The Serra da Capivara National Park is internationally recognized because it houses the most important concentration of rock paintings and archeological sites in the American continent. Vestiges of human occupation are distributed in 1.000 archeological sites many times located in Quaternary sediments, with few researches realized until the moment. The objec
Publicado em: 2007
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19. Variabilidade genetica e estrutura de populações de Cochliomyia hominivorax (Diptera: Calliphoridae) : uma nova perspectiva atraves de marcadores microssatelites / Genetic diversity and population structure in the new world screw-worm, Cochliomyia hominivorax (Diptera: Calliphoridae), as revealed by microsatellite markers
The cultural and economic importance of animal production in South America dates back to the colonial era. This continent has one of the largest percentages of the world s total cattle population and countries like Brazil, Argentina and Uruguay play a major role as exporters of a variety of livestock products. Diseases affecting livestock can have a signific
Publicado em: 2006
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20. Características de árvores emergentes utilizadas por Gavião-real (Harpia harpyja) para nidificação no centro e leste da Amazônia Brasileira
The Harpy eagle (Harpia harpyja) the American powerful raptor lives thought the New Worlds forests, from the south of Mexico to the northeast of Argentina. Between 1984 and 2000, that species was listed in a threatened of extinction Brazilian species list. At the Atlantic Forest the population declined drastically, by the way of the deforestation - the watch
Publicado em: 2005
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21. Associations between jumping spiders (Salticidae) and Bromeliaceae / Associações entre aranhas Salticidae e Bromeliaceae : historia natural, distribuição espacial e mutualismos
The understanding of the interactions between arthropods and plants has grown considerably in the last few years. Although the spiders are among the most abundant arthropod group and compose the main predator guild on vegetation, there exist very few studies involving spiders and plants. Here, we report information showing that some salticid species are stri
Publicado em: 2005
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22. Evolução tectono-estrutural do Campo de Xaréu (Sub-bacia de Mundaú, Bacia do Ceará - NE do Brasil: abordagem multiescala e pluriferramental
The Xaréu Oil Field, located in the center-southern portion of the Mundaú Sub-Basin (eastern portion of the Ceará Basin), is characterized by a main Iramework of NW-trending and NE-dipping faults. The faults in the Xaréu Oil Field, among which the Xaréu Fautt stands out, are arranged according to an extensional-listriclan, rooted on a detachment surface
Publicado em: 2004
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23. Enterobius vermicularis: ancient DNA from north and south American human coprolites
A molecular paleoparasitological diagnostic approach was developed for Enterobius vermicularis. Ancient DNA was extracted from 27 coprolites from archaeological sites in Chile and USA. Enzymatic amplification of human mtDNA sequences confirmed the human origin. We designed primers specific to the E. vermicularis 5S ribosomal RNA spacer region and they allowe
Memórias do Instituto Oswaldo Cruz. Publicado em: 2003-01
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24. Analysis of ancient DNA from coprolites: a perspective with random amplified polymorphic DNA-polymerase chain reaction approach
The aim of this work was to determine approaches that would improve the quality of ancient DNA (aDNA) present in coprolites to enhance the possibility of success in retrieving specific sequence targets. We worked with coprolites from South American archaeological sites in Brazil and Chile dating up to 7,000 years ago. Using established protocols for aDNA ext
Memórias do Instituto Oswaldo Cruz. Publicado em: 2003-01